Electric stop-motion mechanism for looms.



- BEST AVAILABLE 00F No- 808,416. PATENTED DEC. 26, 1905.

J. B. WHITNEY.

ELECTRIC STOP MOTION-MECHANISM FOR- LOOMS.

APPLICATION FILED FEB. 28. 1905.

ATTORNEYS JOSEPH B. WHITNEY, OF BROOKLYN, NEIV YORK.

ELECTRIC STOP-MOTION MECHANISM FOR LOOIVIS.

Specification of Letters Patent.

Patented Dec. 26, 1905. p

' Application filed February 28,- 1905. Serial No. 247.707.

To all whom it may concern.-

Be it known that I, J OSEPH B. WHITNEY, a citizen of the United States, residing in Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Electric Stop-Motion Mechanism for Looms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

My present invention relates to electric stop-motion mechanisms for looms, and has for its object to provide means for preventing entanglements between warp-threads caused by fliers on certain threads becoming twisted about others or otherwise from progressing so far into the mechanism of the loom as to do damage to the goods being woven and engender delay in the Weaving.

My invention consists, in combination with a means for maintaining a lease in the warp, of an electric actuating means for setting in motion devices for stopping the loom, such clectro-actuating means having terminals arranged in such manner that when entanglements between warp-threads appoach the electric current is influenced by them to set in motion said stopping devices.

In the accompanying drawings, Figure 1 is a view in side elevation of a loom provided with my improvement. 2 is an enlarged top plan view of that portion of the loom immediately containing my improvement. 1

In the drawings, a is the loom-frame and b the warp.

c is an electric stop-motion mechanism which operates to stop the loom upon the breaking of any thread in the warp.

d is one of two rollers comprised in the mechanism 0, over which the work passes after leaving the warp-roller e. Further description of the mechanism a is unnecessary herein, since this mechanism has no relation to my present invention.

Between the warp-roller and the rollerd the warp is crossed or decussated, being so held by lease-rods f and g, the latter of which has appreciable thickness, so as to form a relatively wide space between the two sets of threads, making up the lease thus produced at h. The lease-rods f and 9 may be connected by means 'i with some fixed part of the loom, so as to be prevented from moving forward with the warp as the latter is advanced by the take-up mechanism of the loom.

j is an electric circuit coin rising a source of electric energy is, and in w 'ch may be included an electromagnet (not shown) or other device, the energizing of which has to influence the operation of the stop devices of the loom. Such devices may be of any suitable construction and kind and require no de-.

scription herein.

Attached to the lease-rod g on the side thereof toward the roller e are two strips I: Z. They are secured to the lease-rod by screws m and (if said rod is made of metal) may be insulated therefrom by spacers n. They lie the one over the otherlengthwisebf the leaserod and in the adaptation shown extend substantially from end to end thereof, or at least as long as the warp is wide. The strip 1 is flexible enough so that upon the slightest pressure thereon toward strip Is it will contact therewith and close the circuit.

If now two threads are entangled with each other and, it should be remarked, it is referable to alternate single threads informing the lease b, so as to positively insure the detection of entanglements by the detecting mechanism) and the entanglement is brought against the strip Z, it will press the same against strip k, closing the circuit and thereby bringing about the stopping of the loom.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a loom, the combination of means for maintaining a lease in the warp, an electric circuit, and circuit-closing means having the moving part thereof projecting into and tran .l-y of the space occupied by the lease, 1-. i'ostantially as described.

2. In a loom, the combination of means for maintaining a lease in the warp, an electric circuit, and circuit-closing means comprising, as its moving part, an attenuated device projecting into and transversely of the space occupied by the lease, substantlally as described.

3. The combination, in a loom, of means for maintaining a lease in the warp, an electric circuit, and circuit-closing means comprising two, normally spaced, attenuated devices projecting into and transversely of the able against the other, substantially as despace occupied by the lease, and one of them scribed.

being movable against the other, substan- In testimony that I claim the foregoing I tially as described. have hereunto set my hand this 15th day of 5 4:. In a loom, the combination of a rod for February, 1905.

maintaining a lease in the Warp, an electric circuit, and circuit-closing means carried by JOSEPH B. WHITNEY.

said rod and comprising two, normally Witnesses: spaced, attenuated devices extending length- JOHN W. STEWARD, [o 'WISG of said rod and one of them be ng mov- WM. D. BELL. 

